CAN sawv cev rau Controller Area Network, uas yog cov txheej txheem sib txuas lus siv nyob rau hauv ntau yam lag luam. Hauv CAN, muaj ob hom kev sib txuas lus - synchronous thiab asynchronous.
Synchronous kev sib txuas lus txhais tau hais tias lub transmitter thiab receiver yog synchronized nyob rau hauv lub sij hawm. Qhov no txhais tau hais tias lub transmitter xa cov ntaub ntawv ntawm lub sijhawm tas, thiab tus txais yuav paub thaum twg xav tau cov ntaub ntawv. Synchronous kev sib txuas lus muaj txiaj ntsig zoo hauv cov ntawv thov uas cov ntaub ntawv tseem ceeb yuav tsum tau xa mus, xws li hauv tsheb lossis kev tswj hwm kev lag luam.
Asynchronous kev sib txuas lus, ntawm qhov tod tes, txhais tau hais tias lub transmitter xa cov ntaub ntawv thaum twg nws yog npaj txhij, tsis tas tos kom tus receiver npaj. Tus neeg txais yuav tsum tau tshawb xyuas cov ntaub ntawv txuas ntxiv thiab npaj tau txais nws txhua lub sijhawm. Kev sib txuas lus Asynchronous yog qhov muaj txiaj ntsig zoo hauv cov ntawv thov uas cov ntaub ntawv xa tawm tsis tseem ceeb, xws li hauv qee qhov kev siv sensor.
Ob qho tib si synchronous thiab asynchronous kev sib txuas lus hom muaj lawv qhov zoo thiab qhov tsis zoo, thiab kev xaiv ntawm ib qho twg los siv yog nyob ntawm daim ntawv thov tshwj xeeb. Txawm li cas los xij, CAN raws tu qauv tsim los tso cai rau ob hom kev sib txuas lus, ua rau nws muaj ntau yam thiab hloov tau yooj yim xaiv rau ntau yam lag luam sib txawv.
Hauv kev xaus, ob qho tib si synchronous thiab asynchronous kev sib txuas lus hom yog qhov tseem ceeb hauv CAN. Raws li qhov yuav tsum tau ua ntawm daim ntawv thov, ib tus tuaj yeem xaiv ntawm ob hom no kom ntseeg tau tias kev sib txuas lus zoo thiab muaj txiaj ntsig. CAN raws tu qauv qhov hloov tau yooj yim thiab ntau yam ua kom nws ua tau raws li ntau yam kev siv thoob plaws ntau yam kev lag luam.
